<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
</head>
<body>

    <div id="app">
        <span v-for="item in 20">
            {{item}}
        </span>
    </div>


<!--引入vue文件-->
<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<script>
    const vm = Vue.createApp({
    }).mount('#app');


</script>
</body>
</html>
